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Finding the Fourth Proportional to 18,660.06, 25,715.11 and 11,933.97

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Solution

The fourth proportional to 18,660.06, 25,715.11 and 11,933.97 is: 16,446.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.06 : 25,715.11 = 11,933.97 : x
  2. Step 2: Convert to fraction form
    18,660.06/25,715.11 = 11,933.97/x
  3. Step 3: Cross multiply
    18,660.06x = 25,715.11 × 11,933.97
  4. Step 4: Simplify right side
    18,660.06x = 306,883,291.62
  5. Step 5: Solve for x
    x = 306,883,291.62/18,660.06
  6. Step 6: Final answer
    x = 16,446.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.